Abstract
We examine the impact of transmission impairments on the performance
of the optical supercomputer interconnect architecture, initially proposed
in the context of the optical shared memory supercomputer interconnect system
(OSMOSIS) project. We study two versions of the aforementioned optical interconnect
that differ in terms of the number of semiconductor optical amplifiers (SOAs)
used as ON–OFF gates. For practical reasons related to packet arbitration,
the size of the crossbar switch of the optical interconnect in this study
is limited to 64 ports. The switch is based on a broadcast-and-select architecture
and employs DWDM in conjunction with 10 Gb/s intensity modulation/direct detection
per wavelength channel. We show, both by experiment and by simulation, that
the minimization of the number of SOAs in the optical switch by taking advantage
of the cyclic routing capability of optical arrayed waveguide multiplexers/demultiplexers
leads to negligible performance deterioration compared to conventional wavelength-space
switches that are prohibitive slower and do not use any inherent gain properties
like in OSMOSIS.
© 2011 Crown
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription